Birth [ Life Science Animation]

The series Once Upon a Time... Life used the same characters from the other Once Upon a Time... seasons: the good characters represent the cells that make up the body's systems and defense mechanisms, such as red blood cells, white blood cells and platelets, while the bad characters represent the viruses and bacteria that threaten to attack the human body. Every episode of the series featured a different organ or system within the human body (like the brain, the heart, the circulatory system, etc.)